Hair dryer attachment



FIG. 1 is a front perspective view of a hair dryer attachment of my new design;

FIG. 2 is a front view thereof, the rear view being a mirror image thereof;

FIG. 3 is a right side thereof, the left side view being a mirror image thereof:

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a hair dryer attachment, as shown and described. 